Chirgwin, Richard. "Arduino to add ARM board this year", The Register, 2011-09-20. Luettu September 20, 2011. “Arduino [...] showed off the new version in time for the New York Maker’s Faire, with a 96 MHz clock speed, 256 KB of flash memory, 50 KB of SRAM, five SPI buses, two I2C interfaces, five UARTs and 16 12-bit analog interfaces.”
